although it's been a while, i thought maybe i should update this thread with the details of what i did, in case someone else needed it.
i had already exported my car from the US when i moved to Canada. at the border in Canada, however, the immigration officer did not give me the Form 1 (the reason being that my work permit was for under 3 years). for that matter, i had to drive back to the border again and to explain the situation to get Form 1 (along with another very small form called E-99). i didn't have to pay any RIV fees because i have temporarily imported my car into Canada (see above), so i was exempt from registering my car with RIV and paying the fees. registering cars in Quebec has a tax, but because my car is imported temporarily into Canada, i was exempt from paying that tax as well. to prove that, i had to go to Revenu Quebec, show them Form 1 and my work permit, and get the form VDE-23. i then took my car to a certified mechanic to get it inspected (i think the fee was $106 or so), and then went to SAAQ to register my car in Quebec. they took my American title and gave me the Quebec registration.